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hello friends i am using kali linux on my laptop and my laptop's internal wifi adapter is not working so i have external usb adapter . now after the installation i plug my wifi adapter and linux is not showing it and i also dont no how to install its driver so help me what should i do in this situation . driver folder-- https://drive.google.com/drive/folders/1tgp5jaelqzvKw39nPp564i9Vzwl6tFfH

external wifi adapter--(exabyte)Realtek Semiconductor Corp. RTL8188FTV 802.11b/g/n 1T1R 2.4G WLAN Adapter

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  • What is lsusb showing when it's plugged in? May 4, 2021 at 20:24
  • lsusb is showing but in top right wifi section it does not show wifi adapter May 5, 2021 at 4:17
  • drive.google.com/drive/folders/… from this link u have access to have driver folder comes with wifi adapter can u tell me which file i should use and how to install it May 6, 2021 at 20:40

2 Answers 2

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Alright. Better strap in, because it's going to be a long one:

  1. Open your terminal and start working.
  2. Run lsusb -v, which should give you an output similar to this:
06:00.0 Network controller: Realtek Semiconductor Corp. RTL8188FTV
    Subsystem: Realtek Semiconductor Corp.
    Kernel driver in use: iwlwifi
    Kernel modules: iwlwifi
  1. Since the adapter is an USB adapter, you run dmesg | grep usbcore as root, which should give you an output similar to this usbcore: registered new interface driver rtl8188.
  2. Check if the wireless interface has been created using ip link. If the adapter has been created the name of the adapter should start with a 'w' (e.g. wlan0; wlp2s0).
  3. Use the ip link set [YOUR INTERFACE] up command to bring up your interface (e.g. ip link set wlan0 up. If you get an error message, please provide it by commenting the answer I'm providing you.
  4. Check the kernel messages if the firmware is being loaded with dmesg | grep firmware, which should yield something like this:
[   7.148259] iwlwifi 0000:02:00.0: loaded firmware version 39.30.4.1 build 35138 op_mode iwldvm
  1. If there is no erroneous output to the command in step 6, use dmesg | grep [FIRMWARE] (in the case of step 6, it was iwlwifi. Again, yours may be different).
  2. If the kernel module was loaded properly, you can proceed to the next step in the Arch wiki (#Utilities)

I checked the support from the Kernel wiki and I suspect that your device may not be supported.

Again, I suggest following the Arch wiki - Wireless network configuration, which provides a fantastic way to solve your issue. This goes for general Linux issues as well. It is very easy to follow and it is aimed at beginners and proficient users alike.

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  • Answers should be self-contained. If the link goes bad in the future, this answer will become useless. Please include essential parts of the linked resource in your answer, then cite the link as a source.
    – gronostaj
    May 5, 2021 at 7:40
  • I see. It's quite the chapter though, with a lot of steps and a lot of extra steps/explanations. So that's the practice on the site? Like, adding the steps and link to source?
    – telometto
    May 5, 2021 at 7:50
  • This site, and all other sites in the Stack Exchange network, are basically built to become the ultimate, lasting resources for their particular domain. Link-only answers pose a problem in this model, because rather than provide useful guidance immediately they point users to a third party which may not be as reliable. Providing useful links is welcome of course, but unless you can frame it as a self-contained solution, you should post them as comments.
    – gronostaj
    May 5, 2021 at 8:01
  • Alright. Thanks for the heads-up. I have now updated my answer to, at least, check if the modules and firmware are properly loaded.
    – telometto
    May 5, 2021 at 8:14
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ip link set wlan0 up 1 ⨯

RTNETLINK answers: Operation not permitted

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